Abstract: Fuel gas compositions for use in metal fabrication are provided comprising fuel gases comprising a base fuel gas mixed with from about 1% to less than 30% hydrogen.

Abstract: A valve in which the flow control element includes a fixed disk and a rotatable disk, and a motor operable to rotate the rotatable disk. The motor is disposed in the bore of the valve, aligned with the long axis of the valve body and the axis of rotation of the rotatable disk.

Abstract: A cutting nozzle assembly and associated method of making same includes a nozzle having a central bore extending therethrough along a longitudinal axis through which an associated cutting gas is discharged. A plurality of spaced fuel gas bores are arranged around the central bore, and preheat passages are arranged around both the central bore and the fuel gas bores. A retaining nut receives at least a portion of the nozzle therein, and the retaining nut includes a shroud extending axially outward from a discharge end of the nozzle. At least one of an inner surface of the shroud and the additional preheat passages are angled inwardly toward the longitudinal axis. The fuel gas bores and the preheat passages each have the same cross-sectional dimension, and twice the number of preheat passages as fuel gas bores are provided.

Abstract: The present invention is drawn to a low-cost “meso” device that is able to effectively deliver functional self-delivery siRNA to subject and inhibit expression of a gene in the subject as well as related methods. In particular, a method of transdermally delivering nucleic acid material to a subject is provided. The method includes adapting a motorized meso machine for delivery of nucleic acid material; introducing nucleic acid material into a chamber of the motorized meso machine; and contacting the motorized meso machine to a skin surface of a subject for a period of time sufficient to deliver the nucleic acid material into the skin surface of the subject.

Abstract: A combustor may include a nonmetallic combustor body configured to hold a combustion reaction. The combustor may include and one or more electrodes disposed outside the nonmetallic combustor body and configured to apply electrical energy to the combustion reaction. The combustor may include a power supply operatively coupled to the one or more electrodes.

Abstract: A system for performing exothermic operations or oxygen delivery uses a rod and handle configuration to create a flowpath of oxygen. The rod includes cables having stainless steel fibers that burn using the oxygen within a hollow center area. While burning, the rod cuts through material. A sheath covers the covers to contain the gases and prevent unraveling of the cables. The handle attaches to the rod and provides control of the flow of oxygen to the rod. A manifold fixing in place bottles of oxygen connects to the handle and can be fixed to provide different mixtures from different bottles. The rod is disconnected when needed to fix a mask thereto for delivering breathable oxygen to a patient.

Abstract: A method of severing at least a first object comprises: positioning a severing device adjacent to the first object, wherein the first object is a wireline or a tubular, and wherein the severing device comprises: a first reactant, and a second reactant; initiating a reaction, or allowing a reaction to occur, between the first reactant and the second reactant, wherein the reaction is an exothermic reaction, and wherein heat evolved from the reaction has a temperature greater than or equal to the melting point of the first object; and directing at least a portion of the heat from the outside of the first object through the first object.

Abstract: Combustible gas, which is easy to be stored, transported and the like and can contribute to improving the quality of a finished state of an operation such as gas cutting, gas welding or brazing, contains ethylene at 38 v/v % or more and 45 v/v % or less and the remainder being hydrogen and unavoidable impurity.

Abstract: A breaching device that may be used to create a linear and, if desired, continuous, cut or breach in a metal structure. The cut or breach created may be non-linear in shape and not deviate from the functionality of the device. The device includes a plurality of containers joined together, such as by a metal wire or the like to form a series of cutting charges. One or more of the containers includes Reactive Material (RM) that may be ignited electronically or some other activation mechanism. The containers that do contain RM are sealed with the RM therein and preferably fabricated to be sufficiently heat resistant so that the RM is only ignited intentionally. The RM that is contained in the containers may be fired simultaneously, sequentially or in a programmed pattern, depending on the requirements of the application.

Abstract: A method of directing a gas flow in a tip of a gas torch includes: directing a flow of gas to an outer passageway of the tip; directing the flow of gas inwardly through at least one intermediate gas passageway; directing the flow of gas to a central gas passageway of the tip; and directing the flow of gas distally through a distal orifice of the tip.

Abstract: The invention relates to a device for the thermal deburring of workpieces, having at least one deburring chamber and one feeding device for introducing a fuel gas mixture into the deburring chamber. A supplementary gas supply is provided for at least the deburring chamber or for the feeding device such that the fuel gas mixture located at least in the deburring chamber or in the feeding device can be mixed at least partially with supplementary gas. Further, a method for the rapid ventilation of a device for the thermal deburring of workpieces is also provided.

Abstract: A continuous heat treatment furnace is provided in which an atmosphere-control gas is introduced to a heating chamber having a heating zone, metal tubes are continuously charged along an axial direction from a furnace entrance, and the metal tube subjected to a heat treatment is taken out from a furnace. The continuous heat treatment furnace includes a front chamber which has a preheating zone on an entrance side of the heating chamber and seal curtains which are located on an entrance side and an exit side of the front chamber.

Abstract: Combustible gas, which is easy to be stored, transported and the like and can contribute to improving the quality of a finished state of an operation such as gas cutting, gas welding or brazing, contains ethylene at 38 v/v % or more and 45 v/v % or less and the remainder being hydrogen and unavoidable impurity.

Abstract: The object of the present invention is to provide a method for cutting with gas which uses a cutting tip including a preheating hole for forming a preheating flame with a fuel gas and an oxygen gas for preheating, and an oxygen gas hole for cutting a workpiece by injecting oxygen gas for cutting, and which can decrease an amount of hydrogen gas used by supply a fuel gas to the preheating hole, which is appropriate in both heating and cutting the workpiece, and an apparatus for cutting with gas, and the present invention provides an apparatus for cutting with gas (30) which supplies an oxygen gas, and a fuel gas to a cutting tip (20) including a preheating hole (23) and an oxygen gas hole for cutting (22), wherein the apparatus (30) includes a supply circuit for oxygen gas (50), a supply circuit for hydrogen gas (41), a supply circuit for hydrocarbon-based gas (45), and a gas supply control means (60), and the gas supply control means (60) can alter a ratio of the hydrogen gas and the hydrocarbon-based gas whi

Abstract: A system for performing exothermic operations or oxygen delivery uses a rod and handle configuration to create a flowpath of oxygen. The rod includes cables having stainless steel fibers that burn using the oxygen within a hollow center area. While burning, the rod cuts through material. A sheath covers the covers to contain the gases and prevent unraveling of the cables. The handle attaches to the rod and provides control of the flow of oxygen to the rod. A manifold fixing in place bottles of oxygen connects to the handle and can be fixed to provide different mixtures from different bottles. The rod is disconnected when needed to fix a mask thereto for delivering breathable oxygen to a patient.

Abstract: According to an embodiment, a method of severing at least a first object comprises: positioning a severing device adjacent to the first object, wherein the first object is a wireline or a tubular, and wherein the severing device comprises: a first reactant, and a second reactant; initiating a reaction, or allowing a reaction to occur, between the first reactant and the second reactant, wherein the reaction is an exothermic reaction, and wherein heat evolved from the reaction has a temperature greater than or equal to the melting point of the first object; and directing at least a portion of the heat from the outside of the first object through the first object.

Abstract: A slab shaping system includes a slab shaping device. The slab shaping device includes a cutting device and de-burring device, wherein the cutting device and the de-burring device, respectively cut and de-burr a slab. According to an embodiment, the slab shaping system may include a plurality of spaced apart slab support beams that form at least one slot therebetween. According to an embodiment, the cutting device and de-burring device may be axially-aligned. A method for operating a slab shaping system is disclosed. The method includes the steps of positioning a plurality of slab support beams on a table to form at least one slot; positioning a slab over the slab support beams; positioning a cutting device and de-burring device of a slab shaping device in axial-alignment; and cutting and de-burring the cut in the slab along a length of the at least one slot.

Abstract: A gas cutting method is provided which includes: mixing hydrogen gas and hydrocarbon gas to acquire fuel gas; ejecting a preheating flame, which is formed by mixing and igniting the fuel gas and preheating oxygen gas, from an end of a cutting tip to heat a workpiece; and ejecting cutting hydrogen gas to the heated workpiece to cut the workpiece. Here, the content of the hydrocarbon gas in the fuel gas is more than 0 vol % and equal to or less than 4 vol %.

Abstract: A pivoting door assembly for a downdraft cutting table assembly includes a door for covering a vent of the downdraft cutting table assembly, and an arm assembly coupled to the door. The downdraft cutting table assembly may include a cutting table for supporting a workpiece, a cutting torch assembly for positioning a cutting torch for cutting the workpiece, an exhaust duct for exhausting fumes, and a vent opening into the exhaust duct. The downdraft cutting table assembly may also include a slag removal system. The arm assembly is actuated by the cutting torch assembly as the cutting torch assembly positions the cutting torch over the cutting table. Actuation of the arm assembly by the cutting torch assembly causes the arm assembly to pivot the door open for allowing fumes from the cutting torch to be drawn into the exhaust duct.

Abstract: The object of the present invention is to provide a method for cutting with gas which uses a cutting tip including a preheating hole for forming a preheating flame with a fuel gas and an oxygen gas for preheating, and an oxygen gas hole for cutting a workpiece by injecting oxygen gas for cutting, and which can decrease an amount of hydrogen gas used by supply a fuel gas to the preheating hole, which is appropriate in both heating and cutting the workpiece, and an apparatus for cutting with gas, and the present invention provides an apparatus for cutting with gas (30) which supplies an oxygen gas, and a fuel gas to a cutting tip (20) including a preheating hole (23) and an oxygen gas hole for cutting (22), wherein the apparatus (30) includes a supply circuit for oxygen gas (50), a supply circuit for hydrogen gas (41), a supply circuit for hydrocarbon-based gas (45), and a gas supply control means (60), and the gas supply control means (60) can alter a ratio of the hydrogen gas and the hydrocarbon-based gas whi

Abstract: A drawing support for a metal sheet drawing machine. In one implementation the drawing support is constructed of a plurality of plates positioned in series one after the other and coupled together so that at least a portion of the plurality of plates are compressed one against the other. In one implementation each of the plurality of plates has a window through which metal sheet to be drawn may pass, and a holder for holding the metal sheet when it is drawn.

Abstract: The invention relates to a method for flame cutting a part made of a metal containing iron, implementing at least one blowtorch having a cutting nozzle, wherein the operation is carried out according to the steps of preheating a localized area of the part by means of a flame obtained by the combustion of a combustible gas and oxygen, then directing the gaseous oxygen towards the preheated localized area into a first pressure and/or first flow for initiating a bore while shifting the blowtorch in the cutting direction. Then, after initiating a bore in the part, the pressure and/or flow of gaseous oxygen is increased in the direction of the bore start area to a second pressure higher than the first pressure and/or a second flow higher than the first flow to obtain the complete bore in the part. The invention also relates to associated equipment.

Abstract: A solid body of a metal alloy comprising less than 99% by weight of noble metal and more than 1% by weight of dispersion-strengthening metals is converted for production of a dispersion-strengthened platinum material by at least 90% oxidation of the dispersion-strengthening metals into a dispersion-strengthened platinum material. The dispersion-strengthened platinum material contains a noble metal component and a dispersion-strengthening agent, the proportion by mass of the noble metal component amounting to between 95 and 99% by weight and the noble metal component of platinum or a platinum alloy including at least 55% by weight Pt, 0 to 30% by weight Rh, 0 to 30% by weight Au, and 0 to 40% by weight Pd. The remaining proportion by mass of more than 1% by weight is a dispersion-strengthening agent, which contains at least one metal oxidized at least 90% by weight with oxygen, the metal being selected from the group of Ce, Zr, Sc, and Y.

Abstract: A slab shaping system includes a slab shaping device. The slab shaping device includes a cutting device and de-burring device, wherein the cutting device and the de-burring device, respectively cut and de-burr a slab. According to an embodiment, the slab shaping system may include a plurality of spaced apart slab support beams that form at least one slot therebetween. According to an embodiment, the cutting device and de-burring device may be axially-aligned. A method for operating a slab shaping system is disclosed. The method includes the steps of positioning a plurality of slab support beams on a table to form at least one slot; positioning a slab over the slab support beams; positioning a cutting device and de-burring device of a slab shaping device in axial-alignment; and cutting and de-burring the cut in the slab along a length of the at least one slot.

Abstract: A gas torch assembly and its method of use are described for use in high-temperature applications such as a furnace, power generation station, pottery kiln and flame cutting and welding torches, which requires only inexpensive, low environmental impact, low pressure fuels such as propane gas and air; utilizes the initial internal combustion of the fuel gas to subsequently preheat air/oxygen and/or the fuel gas to well above ambient temperature; and dispenses with the need of arc-oxygen or arc-air cutting of metals.

Abstract: A method of processing materials at multiple work sites that prevents contamination of the atmosphere. The method includes providing a plurality of work sites containing workpieces, positioning a track connecting the sites, providing a mobile system comprising an enclosure and a treatment system in communication with a space enclosed by the enclosure, moving the mobile system so that the enclosure surrounds the workpieces on the first site, processing those workpieces, moving the mobile system along the track as a single unit onto a second work site, and processing those workpieces on the second site. The enclosure may be readily openable at opposing portions facing the track to enable the enclosure to pass over workpieces on the plurality of work sites. Additionally, a method of constructing an operation for processing workpieces is provided.

Abstract: A fixture includes an enlarged plate having slots in an upper surface, and support members are secured to the plate at the slots. The fixture is utilized to machine parts that are initially flame-cut from a large plate/sheet of hot-roll steel. A plurality of notches are flame-cut into the perimeter of the part. The support members engage the flame-cut slots to secure the part to the plate for machining a first side of the part. Precision notches are machined into the part, and precisely-shaped protrusions on the support members are closely received in the precision notches to precisely locate the part for further machining on a second side thereof.

Abstract: The present invention provides for cutting operations using linear thermite charges; the charges cut one dimensional or two dimensional geometric shapes; the invention is useful for structure entry or demolition.

Abstract: A steel coil cutting apparatus that overcomes these and other problems has an automated arm having a free end. At least two cutting heads are attached to the free end of the automated arm.

Abstract: A slag-removal system for a cutting table includes a pair of drive members arranged in spaced endless loops extending parallel to a longitudinal direction, with a slag plow connected between the drive members, each loop having a lower run and an upper run spaced above the lower run. The slag plow is carried along the lower runs as the drive members are rotated, such that the plow scrapes slag from the support surface beneath the table. As the drive members continue to rotate in the same direction, the plow is carried along the upper runs of the drive members back to its starting location for another slag-removal cycle.

Abstract: The present invention provides a method and process for removing adherent molten metal from a surface by applying a non-wetting agent for the metal to the surface or to the adherent molten metal. The non-wetting agent may be a pressurized fluid or applied by a pressurized fluid.

Abstract: An improved nozzle for thermite cutting torches provides an elongated nozzle dimensioned and configured to direct a maximized flow of cutting flame to the desired cutting location on a workpiece. The nozzle includes an exterior wall defining the nozzle face having an arc dimensioned and configured to center the cutting aperture over the desired cut when the cutting torch is clamped to the workpiece. The nozzle also includes a groove for directing the flow of reaction products, thereby minimizing backpressure in the nozzle region, and eliminating the need for a standoff distance.

Abstract: A method for fabricating devices in a pre-assembled state comprising forming plural laminae, registering the laminae, and bonding the laminae one to another is described. The plural laminae contain the substructures and structures of the device. The substructures are coupled to structures and other substructures by fixture bridges in the pre-assembled state. The substructures of the device are dissociated by eliminating the fixture bridges. The plural laminae are registered and bonded to form the device either before or after the fixture bridges are eliminated. The fixture bridges can be eliminated in a variety of ways, including vaporization by electrical current, chemical dissolution, or thermochemical dissociation. One method to selectively bond the laminae together is by microprojection welding. Microprojection welding comprises forming laminae with projections that extend from at least one planar surface of the lamina.

Abstract: A steel cutting apparatus includes a cutting torch that is moved in an arcuate path for guiding the cutting torch so that a cutting flame of the cutting torch is always aimed at a bottom corner of the steel at the side where the cutting process begins. Molten steel and iron oxide flow through a kerf in the steel toward the bottom corner, and drop away from the billet for collection and disposal. Only a very small amount of slag adheres to the bottom corner of the billet when cutting is complete.

Abstract: The invention concerns a flame-cutting process for a parallelepiped slab using one or more flame-cutting blowtorches and a device for its implementation. In accordance with the invention, a slab, lying flat, is lifted using a lifting device to bring its primary plane into a vertical position, and hold it in a vertical position. A relative vertical movement is made between the flame-cutting blowtorches and the slab to cut the slab as it passes before the activated flame-cutting blowtorch.

Abstract: A steel cutting apparatus includes a cutting torch that is moved in an arcuate path for guiding the cutting torch so that a cutting flame of the cutting torch is always aimed at a bottom corner of the steel at the side where the cutting process begins. Molten steel and iron oxide flow through a kerf in the steel toward the bottom corner, and drop away from the billet for collection and disposal. Only a very small amount of slag adheres to the bottom corner of the billet when cutting is complete.

Abstract: The unique in the construction is a number of important components and parts: a) the plate holder in molded aluminium; its double function and shaping in order to be able to be used as both a holder for plates and also serve for transfer of the circular movement to the linear, b) the driving wheel which facilitates the transfer of the circular movement to the plate holder, c) the superstructure which comprises a device for a press roll and also the parallel conveying bar and to make it possible for adjustment of the frictional pressure between the driving wheel and the plate holder, d) adjustment, through engine-driven gear racks, of the plasma gun for the making of holes.

Abstract: Apparatus and method for cutting a workpiece by the use of a laser beam and an assist gas, in which at least one optical means is used to focus the laser beam at several focal points separate from one another, and in which, as assist gas for the said laser beam, a gas mixture containing hydrogen and at least one inert gas is used. The optical means is transparent or reflecting and is chosen from lenses, mirrors and combinations thereof, preferably a bifocal lens. The workpiece to be cut is made of stainless steel, coated steel, aluminum or an aluminum alloy, non-alloy steel or alloy steel. The inert gas is chosen from nitrogen, argon, helium and mixtures thereof.

Abstract: A lower pre-heat block assembly (9) for use with a metal scarfing apparatus (5) is disclosed. The lower pre-heat block assembly has a lower block (38) and an extension (39) engaged upon and in overlying relationship with a front face (46) of the lower block. A gas discharge outlet (56) is defined within the front face of the block. The extension may partially overlie the gas discharge outlet such that a gas discharge orifice (70) is defined in the front face of the block by the extension. The extension includes an upper face (58) which extends forwardly from the front face of the block, and is recessed with respect to an upper face (41) of the block.

Abstract: Disclosed is a metallurgical vessel, in particular a converter for treating liquid molten metals, in particular steel, formed of a refractory lining and a supporting metal shell that surrounds the refractory lining. The vessel is composed of welded together shell rings and dished parts of creep-resistant steel with plate thicknesses of up to 100 mm. The creep-resistant steel used is a highly resistant, water-quenched and then tempered close-grained structural steel with the following composition in wt.-% C 0.14-0.22 Cr 0.4-1.0 Mo 0.3-0.8 Ni 1.5-3.0 V 0.05-0.12 Mn 0.7-1.3 Pmax 0.015 Smax 0.003 Al 0.015-0.065 Si 0.20-0.60 Cumax 0.15 Nmax 0.012 Camax 0.004 the remainder being iron and impurities due to the production process.

Abstract: An object is to provide a heat-resistant steel which can be produced at a low cost but possesses an excellent high-temperature strength. A high-strength heat-resistant steel is provided which comprises C in an amount of 0.06 to 0.15% by weight, Si in an amount of 1.5% by weight or less, Mn in an amount of 0.5 to 1.5% by weight, V in an amount of 0.05 to 0.3% by weight, and at least one of Nb, Ti, Ta, Hf, and Zr, in an amount of 0.01 to 0.1% by weight, the balance being Fe and unavoidable impurities, wherein the high-strength heat-resistant steel has a structure consisting mainly of a bainite structure.

Abstract: A process for cutting coked metal includes cutting with a flame or by electrowelding after the coked metal has been heated sufficiently to relieve stresses in the metal.

Abstract: An apparatus is disclosed for cutting target material which includes a housing having an inner cavity and an elongated nozzle extending from the inner cavity to communicate with the exterior of the housing. The apparatus is provided with a charge for generating a cutting flame and an activating device coupled to the charge. A method for cutting target material is also provided in which the cutting apparatus has an elongated nozzle positioned generally adjacent to a surface of a target material to be cut. The cutting apparatus may be joined with one or more housings to provide a ganged together or joined cutting apparatus. The effect of this ganged cutting apparatus is to provide an extended linear cutting action on the surface of the target material. In addition, in an opposed cutting apparatus, two housings are positioned with their nozzle channels in opposition to permit cutting target material from two directions.

Abstract: Process for stainless steel pickling consisting in placing the material to be treated in a bath kept at a temperature ranging from 30.degree. C. to 70.degree. C. and containing:a) HClb) Fe.sup.3+c) HFd) emulsifiers, wetting agents, polishing agents, acid attack inhibitors;the bath being fed continuously with:an air flow equal to at least 3 m.sup.3 /h per m.sup.3 bath min. and an oxidizer quantity adjusted to the bath redox potential to be kept at 250 mV min.

Abstract: A novel cutting nozzle assembly for a postmixed oxygen-fuel gas torch is disclosed. The nozzle assembly includes a cylindrical shroud which surrounds and extends away from the gas discharge orifices in the gas discharge end of the cutting nozzle. The cylindrical shroud has the advantage of producing a tighter gas stream and of promoting a more thorough mixing of the preheat oxygen and the fuel gas to provide a hotter, more compact flame which produces a more parallel-sided cut through metal workpieces. The cutting tip therefore conserves metal as well as cutting gases. It also cuts faster than prior art postmixed cutting nozzles.

Abstract: A method for cutting steel in which an operator uses high pressure propane and oxygen. The operator heats the steel locally until it is molten, positions a cutting torch with a high angle of incidence relative to the molten steel, and then blasts high pressure oxygen at the molten metal. Such blast serves two purposes, heating the molten metal so it is less viscous and then blowing the molten metal away from the steel sheet creating a cutting trench. The cutting torch is positioned relative to the cutting trench to provide even heat. The cutting torch is then moved generally parallel to the cutting trench to lengthen the cut.

Abstract: A molded, non-metallic insert is disclosed that is of a form which replicates the seat configuration of the oxy-fuel cutting torch into which it is intended to be inserted. The insert material is compressible and resilient and allows a cutting tip, without special requirements, to be installed into the cutting torch so equipped with the insert. The insert is resistant to the difficult environmental conditions in which it is required to operate, in the industrial situations in which it is used. The insert resists elevated temperatures and the chemical and physical effects of the gases it contacts while sealing the flowpaths of the oxygen and fuel flowing through the torch head and cutting tip.

Abstract: A post-mixed cutting torch selectively operable in a pilot mode and a cutting mode is provided by the present invention. The control body includes a fuel passage and an oxygen passage which is divided into a preheat oxygen supply branch and a cutting oxygen supply branch. A fuel flow valve is provided in the fuel passage and an oxygen flow valve is provided in the cutting oxygen supply branch of the oxygen passage. Advantageously, an interconnecting passage extends between the preheat oxygen supply branch and the cutting oxygen supply branch. Accordingly, the torch is operable in a preheat/cutting mode wherein oxygen is directed through both the preheat and cutting oxygen apertures of a cutting nozzle. In addition, each of the fuel and oxygen flow valves is associated with a bypass channel which allows the torch to be operable in a fuel saving pilot mode wherein oxygen is directed through both the preheat and cutting oxygen apertures of a cutting nozzle.

Abstract: A blade for a flail type brush cutting machine. The blade is torch cut or cast from thick metal in a generally L shape to have any desired angle between its stem and floor, in the preferred embodiment the angle is ninety degrees to insure a close cut of brush. The thicker metal will cut thicker brush. A resharpenable cutting edge is also torch cut or cast on the floor of the blade making the cutting edge of the blade resharpenable and renewable by repeat torch cutting. An elliptically shaped attaching hole is also torch cut or cast in the stem of the blade for attaching the blade to a hanger to then be attached to the shaft of the flail cutter. This attaching hole can also be torch cut or cast into any desired shape. A method of providing a blade for a flail type brush cutting machine is also disclosed.

Abstract: Heating metal articles by direct surface impingement of an oxy-fuel flame without causing damage, or surface melting of the articles being heated. Flame contact is cycled to achieve maximum allowable rate of heat introduction thereby substantially reducing the time and energy required to achieve the final desired piece temperature.